#include<iostream>
using namespace std;
void test(int x)
{
    string s="arena/arena";
    s+=char(x+'0');
    string _fin=s+".in",_fans=s+".out";
    freopen(_fin.c_str(),"r",stdin);
    freopen(_fans.c_str(),"w",stdout);
}
int main()
{
    //freopen("arena.in","r",stdin);
    //freopen("arena.out","w",stdout);
}